unable to get the response for the CutomerGroups API in ycommercewebservices

Hi experts,

For the CustomerGroups API in OOTB , rest call(v2) I am unable to get the response, getting following error:

“Cannot find user with uid ‘trusted_client”

(https://localhost:9002/rest/v2/powertools/customergroups/{groupId})

I just added “ROLE_CUSTOMERMANAGERGROUP” to the client “trusted_client” able to get the Oauth token but unable to get the response. (For the remaining roles with the same client I am able to get the response)

Regards,

Naresh